Quark Deconfinement in Rotating Neutron Stars
- Autores
- Mellinger, Richard D.; Weber, Fridolin; Spinella, William; Contrera, Gustavo Aníbal; Orsaria, Milva Gabriela
- Año de publicación
- 2017
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars. Particular emphasis is put on the possible existence of quark matter in the cores of rotating neutron stars (pulsars). In contrast to non-rotating neutron stars, whose particle compositions do not change with time (are frozen in), the type and structure of thematter in the cores of rotating neutron stars depends on the spin frequencies of these stars, which opens up a possible new window on the nature of matter deep in the cores of neutron stars. Our study shows that, depending on mass and rotational frequency, up to around 8% of the mass of a massive neutron star may be in the mixed quark-hadron phase, if the phase transition is treated as a Gibbs transition. We also find that the gravitational mass at which quark deconfinement occurs in rotating neutron stars varies quadratically with spin frequency, which can be fitted by a simple formula.
Facultad de Ciencias Astronómicas y Geofísicas
Instituto de Física La Plata - Materia
-
Astronomía
rotation
quarks
deconfinement
neutron star
pulsar
nuclear equation of state - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/82203
Ver los metadatos del registro completo
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Quark Deconfinement in Rotating Neutron StarsMellinger, Richard D.Weber, FridolinSpinella, WilliamContrera, Gustavo AníbalOrsaria, Milva GabrielaAstronomíarotationquarksdeconfinementneutron starpulsarnuclear equation of stateIn this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars. Particular emphasis is put on the possible existence of quark matter in the cores of rotating neutron stars (pulsars). In contrast to non-rotating neutron stars, whose particle compositions do not change with time (are frozen in), the type and structure of thematter in the cores of rotating neutron stars depends on the spin frequencies of these stars, which opens up a possible new window on the nature of matter deep in the cores of neutron stars. Our study shows that, depending on mass and rotational frequency, up to around 8% of the mass of a massive neutron star may be in the mixed quark-hadron phase, if the phase transition is treated as a Gibbs transition. We also find that the gravitational mass at which quark deconfinement occurs in rotating neutron stars varies quadratically with spin frequency, which can be fitted by a simple formula.Facultad de Ciencias Astronómicas y GeofísicasInstituto de Física La Plata2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttp://sedici.unlp.edu.ar/handle/10915/82203enginfo:eu-repo/semantics/altIdentifier/issn/2218-1997info:eu-repo/semantics/altIdentifier/doi/10.3390/universe3010005info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0/Creative Commons Attribution 4.0 International (CC BY 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:15:26Zoai:sedici.unlp.edu.ar:10915/82203Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:15:26.252SEDICI (UNLP) - Universidad Nacional de La Platafalse |
dc.title.none.fl_str_mv |
Quark Deconfinement in Rotating Neutron Stars |
title |
Quark Deconfinement in Rotating Neutron Stars |
spellingShingle |
Quark Deconfinement in Rotating Neutron Stars Mellinger, Richard D. Astronomía rotation quarks deconfinement neutron star pulsar nuclear equation of state |
title_short |
Quark Deconfinement in Rotating Neutron Stars |
title_full |
Quark Deconfinement in Rotating Neutron Stars |
title_fullStr |
Quark Deconfinement in Rotating Neutron Stars |
title_full_unstemmed |
Quark Deconfinement in Rotating Neutron Stars |
title_sort |
Quark Deconfinement in Rotating Neutron Stars |
dc.creator.none.fl_str_mv |
Mellinger, Richard D. Weber, Fridolin Spinella, William Contrera, Gustavo Aníbal Orsaria, Milva Gabriela |
author |
Mellinger, Richard D. |
author_facet |
Mellinger, Richard D. Weber, Fridolin Spinella, William Contrera, Gustavo Aníbal Orsaria, Milva Gabriela |
author_role |
author |
author2 |
Weber, Fridolin Spinella, William Contrera, Gustavo Aníbal Orsaria, Milva Gabriela |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
Astronomía rotation quarks deconfinement neutron star pulsar nuclear equation of state |
topic |
Astronomía rotation quarks deconfinement neutron star pulsar nuclear equation of state |
dc.description.none.fl_txt_mv |
In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars. Particular emphasis is put on the possible existence of quark matter in the cores of rotating neutron stars (pulsars). In contrast to non-rotating neutron stars, whose particle compositions do not change with time (are frozen in), the type and structure of thematter in the cores of rotating neutron stars depends on the spin frequencies of these stars, which opens up a possible new window on the nature of matter deep in the cores of neutron stars. Our study shows that, depending on mass and rotational frequency, up to around 8% of the mass of a massive neutron star may be in the mixed quark-hadron phase, if the phase transition is treated as a Gibbs transition. We also find that the gravitational mass at which quark deconfinement occurs in rotating neutron stars varies quadratically with spin frequency, which can be fitted by a simple formula. Facultad de Ciencias Astronómicas y Geofísicas Instituto de Física La Plata |
description |
In this paper, we use a three flavor non-local Nambu–Jona-Lasinio (NJL) model, an improved effective model of Quantum Chromodynamics (QCD) at low energies, to investigate the existence of deconfined quarks in the cores of neutron stars. Particular emphasis is put on the possible existence of quark matter in the cores of rotating neutron stars (pulsars). In contrast to non-rotating neutron stars, whose particle compositions do not change with time (are frozen in), the type and structure of thematter in the cores of rotating neutron stars depends on the spin frequencies of these stars, which opens up a possible new window on the nature of matter deep in the cores of neutron stars. Our study shows that, depending on mass and rotational frequency, up to around 8% of the mass of a massive neutron star may be in the mixed quark-hadron phase, if the phase transition is treated as a Gibbs transition. We also find that the gravitational mass at which quark deconfinement occurs in rotating neutron stars varies quadratically with spin frequency, which can be fitted by a simple formula. |
publishDate |
2017 |
dc.date.none.fl_str_mv |
2017 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
status_str |
publishedVersion |
dc.identifier.none.fl_str_mv |
http://sedici.unlp.edu.ar/handle/10915/82203 |
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http://sedici.unlp.edu.ar/handle/10915/82203 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
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info:eu-repo/semantics/altIdentifier/issn/2218-1997 info:eu-repo/semantics/altIdentifier/doi/10.3390/universe3010005 |
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info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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openAccess |
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http://creativecommons.org/licenses/by/4.0/ Creative Commons Attribution 4.0 International (CC BY 4.0) |
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